For future reference

rivets-test.js

//= require components/rivets/lib/rivets

// ----------------------------------

  attributes: {},
  set: function (key, value) {
    if (this.attributes[key] !== value) {
      this.attributes[key] = value;
      this.events.triggerEvent("change:" + key, {key: key, value: value});
    }
  },
  get: function (key) {
    return this.attributes[key];
  },


// ----------------------------------

rivets.formatters.t = function(key) {
  return I18n.t(key);
};

rivets.configure({
  adapter: {
    subscribe: function(obj, keypath, callback) {
      var events = {};
      events['change:' + keypath] = callback;
      obj.events.on(events);
    },
    unsubscribe: function(obj, keypath, callback) {
      var events = {};
      events['change:' + keypath] = callback;
      obj.events.off(events);
    },
    read: function(obj, keypath) {
      return obj.get(keypath);
    },
    publish: function(obj, keypath, value) {
      obj.set(keypath, value);
    }
  }
});